

class Age:
    def __get__(self, instance, owner):
        print('__get__')
        return instance._age
    def __set__(self, instance, value):
        print('__set__')
        print(self)
        instance._age = value
    def __delete__(self, instance):
        print('__delete__')
        del instance._age

class Person():
    age = Age()

    def __init__(self, age) -> None:
        self._age = age


p = Person(11)
p.age = 10

p2 = Person(111)
p2.age = 11
